body {
	background-color: darkgrey;
	font-family: monospace;
}
header h1 {
	float: left;
    margin-top: 35px;
}
img {
	max-width: 100px;
    float: left;
}
nav {
	background-color: darkgrey;
}
nav ul {
	width: 100%;
	list-style-type: none;
	margin: 0;
	padding: 5px 0px;
	display: flex;
	flex-direction: row;
}
nav li {
	flex-grow: 1;
	border-radius: 5px 20px;
    margin: 0px 5px;
}
nav li:hover {
	background-color: lightgrey;
}
nav a {
	display: block;
	padding: 1em;
	text-align: center;
	margin-right: 0.2em;
	text-decoration: none;
	color: black;
}
a strong {
	font-size: 1.5em;
}
.ejemploCodigo, .ejemploVisualizacion {
    width: 50%;
    display: table-cell;
}
.ejemploVisualizacion {
	padding-left: 20px;
}
span {
	display: block;
}
.tab1 {
	padding-left: 20px;
}
.tab2 {
	padding-left: 40px;
}
.tab3 {
	padding-left: 60px;
}
article > section {
	margin-top: 10px;
	padding: 5px 20px;
	background-color: white;
	border-radius: 10px;
}
.arriba {
	display: block;
	text-align: right;
	font-size: 1.5em;
	text-decoration: none;
}